Lake Ontario

Ontario, which lies on the eastern end of the region, has the smallest surface area of the five Great Lakes. It is 193 miles long and 53 miles wide. Its average depth is 283 feet.  

Ways to Connect

A new report from the National Oceanic and Atmospheric Administration calls 2016 the warmest year on record around the globe.  The surface temperature of the Great Lakes was also above average -- and that's not good news.


This spring's heavy rain in the Lake Ontario region had quite an impact on homeowners, but it also affected the water offshore. The rainfall overwhelmed sewage systems in cities around the lake, and pushed tens of millions of gallons of raw sewage into the water.


Veronica Volk

Lake Ontario has dropped a foot since heavy spring rains swelled it to record levels. But it's still much higher than normal -- and that means the pain continues for homeowners and businesses along the shore.

So does the controversy over regulators who manage lake levels.

The government body that regulates water levels on Lake Ontario is reducing the outflows to the St. Lawrence River. The International Joint Commission (IJC) says water levels have dropped rapidly, down 12 inches since the peak in late May. That's drawing some criticism from shoreline residents who say the move is premature.

Veronica Volk

For a lot of people and business around Lake Ontario, flooding put summer on hold. Now that the water is going down, businesses are coming back, including an amusement park on one of Toronto's harbor islands.


Pages